LEFP战斗部毁伤元成型及初速分析研究

线形爆炸成型弹丸(LEFP)战斗部近些年成为研究热点。以一种大长径比LEFP战斗部为研究对象,为了更精确地估算LEFP初速,利用数值模拟技术,对LEFP成型结果以及初速度进行仿真。通过研究LEFP各点初速分布,对格尼公式进行修正,求得适用于估算LEFP初速估算的修正格尼公式。在此基础上,提出符合LEFP战斗部的有效装药模型。通过试验研究,检验LEFP毁伤能力,并对毁伤元初速的试验结果、数值模拟结果、修正型格尼公式计算结果进行对比,验证修正后的格尼公式适用于LEFP战斗部的毁伤元初速估算。

The study of Linear Explosively Formed Penetratorswarhead kill element on forming and initial velocity

Linear explosively formed penetrator (LEFP) warhead becomes a spot in research. In order to estimate initial velocity of large length to diameter ratio LEFP, numerical simulation was used to simulate its forming result and initial velocity. Through simulating the initial velocity distribution of LEFP, Gurney formula was corrected to be applicable to estimate initial velocity of LEFP. Based on the corrected Gurney formula, an effective charge model relating to the curve warhead is advanced. The results of the experiment, numerical simulation and formula computing of initial velocity of LEFP were compared to validate The corrected Gurney formula. And, The damage ability of LEFP was tested by experiment.